Pump-plunger assembly



May w 7 w27" K. P. NEILSEN PUMP PLUNGER ASSEMBLY Filed May 18, 1925 /7 7 TOR/VE X ufff,

Patented May 17,

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yKARL I. NEILSEN, F LONG: BEACH, CALIFORNIA.

:PUMP-PLUNGER ASSEMBLY. i'

Application filed May 18,

An object of my invention is to provide a pump plunger, in which the passages thlerein provide an unrestricted flow for the o1 4 Another object is to provide a plunger which is not so liable to become clogged with sand.

Furtherobjectsare to provide a top open valve for 4a plunger embodying greater f valve pulling sleeve, on a larger scale than Fig. 1.

Fig. 6, is a longitudinal sectional view ot the plunger top valve cage.

F1g. 7, is a side elevation of the valve seat for the top cage. n

Referring more particularly tothe drawing, my pump plunger comprises a top valve p 1, a bottom valve 2, and a standing valve 3.- 1n the topy valve cages heretofore in use a threaded pin was formed thereon whereby the valverv was coupled to the sucker rod.

stream line for the low of oil.'

rllhis pin frequently broke in operation thus requiring a iishing j'ob. ln' a valve cage a l' provide a threaded box 4,' on the top thereof into which the. sucker rod screws. This construction gives great strength to the valve and an easy taper can be formed from the enlarged body to the top, thus adding to the strength of the box, and providing a The usual openings 5 are provided in the side of the valve cage, and a long taper 6v extends/to-` wards the top of the cage thus providing an easier outlet tor the oil without churning the same, thusvincreasing the eilicien'cy of the pump. The cage isexternally threaded on the lower end, as at 7, and screws into the top ofthe plunger l8. Due to the cage screwing directly into the top of the plunger longitudinal sec- 1926. Serial No. 109,828.

greater accuracy,T in alining the cage is possible, and a very small clearance only is necessary between the cage and the pump barrel 9, thus providing little space for the accumulation of sand and minimizing the danger of the pump sanding up. A valve seat 10 is threaded into the lower end of the cage a on the internal threads 11. With this construction the valve seat will not loosen and leak due to the j ar ofthe plunger hitting the standing valve 3. The usual ball I12 operates in the cage a.

rllhe lower plunger valve 2, comprises a blind cage 13, which is secured to the plunger 8 by a threaded sleeve 14. A spider 15 is formed at the top of the cage andin drilling the openings 16 therein, longitudinal slots 17 are simultaneously formed in the cage. Thus it will be seen that the battering of the ball 18'on the spider 15 can not close the openvings 16 therethrough, which is a fault heretofore encountered in cages of this character, in my cage the slots 17 opening into the openings 16 always providing a passage forI nl@ Oil. The han 1a rests on a seat 19 uu-@aaed into the lower end of the cageu13. The ribs-17 act to guide the ball to the center and prevent wearing of the cage.,

lin standing valve pullers heretofore in use, seating of the plunger on the valve frequently resulted in shearing o' the engagin pins thus rendering the puller ineective.- n my puller l provide the standing valve 3 with a ost 20 from which pins 21 extend. A tube 22 is threaded onto the lower end of the seat -19. and a valve pulling sleeve 23 is slidably To engage the pins 21 the plunger 8 is lowy ered and rotated until the pins enter the slots 26, after which an upward movement of the plunger will pick up the standing valve. To

facilitate the entrance of the pins 21 into the slots 26, the entering reach 27 .of said slots slants upwardly, the object being toforce the pins into the slots even ii. said pins are not entered to the top thereof. The slide mal working position. y

Having descr1bed my invention I claim:

Yable sleeve'23 prevents injury to the pins 21 if the plunger 8 shoulddrop below its norim fop valve on said plunger, said nop valve comprising an open cage, and a threaded box on the upper end of said cage, adapted to receive the end of th'e sucker rod, the lower end of said cage being threaded to screw into the top of the plunger and a -valve seat adapted to screw into the lower end of the cage upon which a ball is adapted to seau 2. ln a pump, a plunger in said pump, a top valve on said plunger, said top valve comprising an open cage, and a threaded box on the upper end of said cage, adapted to receive the end of the sucker rod, the lower end of said'eage being threaded to screw into the top of the plunger and a valve seat adapted to screw'into the lower end of the cage upon which a ball is adapted to Seat, a

bottom valve on said plunger, said bottom neeepor valve comprising a blind cage having longitudinal slots en rhe inner surface thereof through which the liquid is adapted to'ow, and a ball valve in said blind cage.

3. ln a pump, a plunger in said pump, a top' valveon said plunger adapted to screw therein, said top valve' oomprlsing an open cage, said cage tapering upwardly to a threaded bon adapted to receive the end of the sucker rod, Said cage having openings in the side thereof, and along taper extending from said openings towards the top of the cage to provide a stream line flow for the liquid, and a valve seat adapted to screw into the lower end of the cage upon which a ball is adapted to seat.

ln testimony whereof l affix mx signature.

' KARL P. NlLliLSEN. 

